Centering apparatus for concrete construction



C. 0. ELLERT.

GENTERING APPARATUS FOR CONCRETE CONSTRUCTION, APPLICATION man FEB. 2;. m4 RENEWED MAR. a. 1919.

1 ,3 1 7, 564. Patented Sept. 30, 1919.

q W E 2 \IIB COLUMBIA MMRAPN cm. WASHINGTON, m c.

CHARLES O. ELLERT, OF BROOKLYN, NEW YORK.

CENTERING APPARATUS FOR CONCRETE CONSTRUCTION.

i Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed February 27, 1914, Serial No.'821,575. Renewed March 8, 1919. Serial No. 281,545.

To all whom it may concern:

, Be it known that I, CHARLES O. ELLERT, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Centering Apparatus for ConcreteConstructlon Carried or Supported by I-beams or like Members, of

which the following is a full, clear, and exact description.

This invention relates to apparatus used in the construction of plastic or concrete pavements or floors or the like carried or supported by steel I beams or like members.

The object of this invention is to provide an improved centering apparatus for positioning and supporting plastic or other suitable. material used to construct pavements or floors or like structures to be carried by I beams or like members, and adapted to be readily positioned, dismantled or re-pos'itioned adjacent suitable I beams, without in'ur' to the members or arts of said cen tering apparatus.

Another ob ect is to provide an improved adjustable clamping or holding means engaging suitable I beamsand suitable longitudinal bearing or supporting members of said centering apparatus, whereby said bearing members are adapted to have a range of' vertical adjustment limited by means .pro- .vided in said clamping means, andalso to' provide a means co-acting withsaid clamping or holding means whereby said clamping means may be readily detached and re moved from said I beams when adjacent concrete has set or hardened.

With these and other objects in View, the invention consists in the novel construction and arrangement of parts hereinafter described and pointed out; in the claims, reference being had to the accompanying drawing forming a part of the. specification, in which similar reference characters indicate simila'rparts. z

j Figure 1, is an elevation showing the collapsible centering apparatus applied to I beams.

Fig. 2,'is a perspective of one of the clampingmembers of the collapsible clamping or holding means shown in Fig. 1, show of parts of clamping means shown in Fig. 4; Suitable I beams are indicated by the numeral 1. V

The longitudinal bearing members 2, are

provided,if desired, with longitudinal holdingmeans 3, shown as a recessed means, s milar to thatshown in panel supporting members 22, where a recessed holding means 23 is provided with suitable angle irons'24,

along itsholding edge by screws 25.

Said recessed holding means 3, are adapted if desired, to engage an auxiliary detacliable clamping device comprising, a 1

plate 18', similar to 31, Fig. 1, having on its inner face an upward extending flange 18*, Fig. 5, adapted to engage the longitudinal holding means 3, and on opposite face of plate 18, is provided ,a bearing17, Figs. 4

and 5,similar to 30, Fig. 1, for a clamp lever 1, 'similar to 29, Fig. 1, which is held in position on bearing 17', by a suitable washer 20, and a suitable threaded nut 21,

is secured on the threaded end 17, of the bearing 17; said clamp lever 16, is provided with suitable interlocking means, as openings 16316",- adapted to register vwith openings 19,1.9"-, '-19 ,in plate 18, Fig. 4; e1 enings 32-,Fig'. 1, being similar to openings 19, 19, 19 i At15,"siniilar to 28, Fig. 1, a lever '14, similar to 27 is pivoted to the clamp lever 16. and is provided with a threaded upper end 14;, Fig. 4-, fitted into a threaded recess 13, in clamp member 13, similar to 26,Fig.-

1; this memberl3, is provided with a downwardly extending flange 13*, similar to 26,

Fig.1,- which is adapted to engage the r'ecessed holding means 23*, of the panel sup porting members 22 while the upwardly extending flange 18 is adapted to engage the recessed holding means 3. r.

The panel supporting members 22, are positioned upon and transversely to said bearingmembers 2 and have a slidable ad ustpanel supporting members 22, are preferably positioned 'ntermediate the adjoining beams and are adjusted to any point between said I beams as desired.

secured to I beams by an adjustable and removable clamping "means, comprising, a pair of opposing clamping members and coacting means .to construct an adjustable and collapsible clamping means.

2 In Fig.2, is shown a perspective of one of the opposing clamping members; each opposing clamping member is preferably u-shaped and is provided with the vertical members 77 77"}, slots 79, 80, in alinement with each other, are provided respectively in said vertical members 7 7, 7 7*, with opening of said slots facing each other; clamp jaws or grips as 78, 7 8 to the upper ends of themembers 77 and thei'loweror bottom ends of'said 'memhere 77, 77 are united or' oined by a connecting horizontal portion or member 78, or similar means, hav ng slot 81,open1ng upward -and 1II 2Ll1116111611t with said slots 79, 8.0, The jaws vorgrips 78, 7 8 ,imay have sharpened points. to "be. driven. into wood. 40 i beams to secure members 2. v P

The said U-shapedclamping members are 7 preferably:positioned in' pairs, members op-'-' posing each other, to inclose and support within the U-sh'ape; the longitudinal bearing members 12-, and engage With said I beams,

in a manner so" thatfthe said jaws or grips as 78,78 ofthe said clamping members, bear upon and engage the fiangesof the I beams.

Detachably secured pins, bolts or screws 85, areentered through slots 79, 80, of the clamping members v77, and,. falso through pins or bolts 85.

7 slots 82,;of the opposing clamping members 1 77 and suitably secured to the longitudinal bearing members 2'. Saidpins or bolts may pass through said slots 79,552,; and if desired, v transversely through said bearing members 2. V v

. The said slots permit thebearing members to have. a vertical slida'ble reciprocal move men-t limited jby the range of the said slots,

{the (holding; :means are 1 adj ustably se'- a *e provided respectively The said adjustable clamping means are thusprevented from slipping away from or I off the said I beams when the wedges are re moved, and the removalof the pins or bolts 855, permits the clamping means to be removed from the bearing members. The bearing members 2 are adjustably positioned and have a vertical slidable or reciprocal movement within the U-shaped clamping members 77, 77 limited by slots as 79, 82,

. lar to 78, Fig. 2, of the opposing clamping The said bearing members 2 are removably members 2 to suitable I beams, against any movement during the operation of concrete pavement or .floor construction.

Suitable screws or like means 88, 89, are enteredthrough slots similar to 81, Fig. 2,

and are secured to'said wedges in a manner.

to prevent any movement or loosening of said wedges, and also to prevent anymovement of thelower portions of the Opposing U-shaped clamping members.

" A modification in construction of the adjustable clamping means is attained by providing oppositely disposed U-shaped clamp ing means 91, 91 positioned in a manner, slmllar to that heretofore descrlbed-regarda ing clamping members 77 77". Meeting ends of the bearing 2 abut at a point intermediate said clampingmembers 91, 91 engagingsaid clamping members 91, 91 and parallel to the bearing members 2, 2, is positioned'a clamp members 2,

connecting means 95, provided with open ings 95 95", 95, opening 95, is adapted to register with slot 94, of the clamping" member 91 and opening 95 is adapted to register withslot 93, in cla-mpingmember 91..

Suitable pins, bolts or screws 97,".similar to 85'," heretofore describedare entered through said registering openings and se' cured to, or pass transversely through said longitudinal bearing members 2, 2 96 are suitable screws or bolts passing through openmgs 95 1n the clamp connecting means 95,- and detachably secured to the abutting] ends of the, bearing members 2, 2 8. 4

The said adjustable clamping means are prevented from slipping away from orbeingaccidentally displaced from the I beams j. the

bearing members 2, 2, are adjustably and removably positioned and have a vertical slidable reciprocal movement within, the

U-shaped clamping members 91, 91 limited by the range of the 'slots93, 94, respectively.

' ,A .supplemental clamp connectingmeans 98 si m ilar. to connecting me ans95,\ may be 7 providedand adapted tofbedetachably 'se cured to the bottom or horizontal member as- 7 8, of the opposing clamping members 91, 91 by suitable bolts; 100, passing through slots positioned similar to slot 81, Fig. 2, and a'threadednut 101, is posltioned andtightened on said bolts 100.

The wedges 86, 87 heretofore mentioned engaging opposing clamping members-77, 77', also prevent, similar to means 98, any movement to the lower portion OI'SELlCl members 77, 77

Suitable wedges 99, are posltioned to bear against the under or lower faces of the bearing members 2, 2 and are adapted to rest upon the bottom or horizontal portion or member as 78, of the'U-shaped opposing clamping members 91, 91 and are driven home to firmly secure and position sald bearing members 2, 2*,to said I beams, against any displacement during the operation of pavement or floor construction.

'To provide for the ready removal of the jaw members of the clamping or holding means 77,77 91, 91', from the set concrete adjacent the I beams and said jaw members, suitable blocks 414 441, are adapted to be detachably positioned outside the rear faces of said members in a manner upon the removal of-isaid blocks 44?, 44, a void space or opening in the set concrete is provided adjoining the said jaw members of a size sufficient to permit said jaw members to be removed from. the, flanges of the embedded,

I beams'and enterinto the said void space or opening and then removed out of and away from the set concrete. in the'set concrete may be filled with plastic at a later time.

"A resting or elevating block 90, preferably intermediate opposing clamping members, are provided between the bottom faces of the lower flanges of the I beams andthe bearing members 2, or the centering or mold panels supported by said bearing members 2, to position said I beams at a desired distance above the bearing members 2, to permit-the plastic to completely embed said I beams at all points on-said I beams except at the resting or elevating blocks 90, which blocks are readily removed when the centering apparatus is dismantled and the openings left in the set concrete are readilyfilled with plastic at a later time.

The longitudinal auxiliary panel support-' ing means 22, are provided with suitable recessed holding means 23 similar in form and construction to that in bearing mem bers 2, and provided with suitable angle irons 2 f along the holding edge secured by screws 25, and are adapted to engage with a suitable auxiliary clamping-means 31, 26, in a suitable manner. v

The panel carriers 22, are adapted to detachably and removably position. suitable The openings studs 33*, braces 87*, and mold panels or centering 33", 34 36", at any desired points along said I beams, in a manner whereupon the displacement of said panel carriers 22,

permits the ready removal of the said mold panels orcentering, Without injury to any of the parts or members used in the centering apparatus.

In operation, the bearing members 2 are of suitable length, and are positioned preferably transversely to and under the said I beams; the adjustable removable clamping means are positioned to engage the bearing members 2, and the flanges of the I beams at suitable points; longitudinal panel carriers 22, are placed upon the bearing members 2 preferably parallel to and positioned intermediate said I beams; and suitable mold panels are mounted upon said panel carriers; auxiliary clamping devices are positioned and engage said panel carriers and said bearing members at desired points. The longitudinal bearing members 2, 2 may be readily'removed'by the collapsing and removal of-the adjustable clamping or holding means from the flanges of the I beams.

Having thus fully described my invention,

what 'I claim is 1. Centering apparatus for use in connec tion with I beams orlikemembers, consisting of a plurality of bearing members, removable holding means provided with slotted vertical side portions engaging and con necting said bearing members and said I beams, removable means positioned in said bearing members and adapted to extend lat erally outward and through said slotted vertical side portions of said holding means whereby said bearing members are adapted to have a. vertical slidable reciprocal move-- ment relative to said slotted vertical side portions, means to detachably lock said bearing members and said holding means in position, and mold panels supported by said bearing members. i

2. Centering apparatus'for use in connec tion with I beams or like members, consist'-' ing of a plurality of bearing members, re movable holding means provided with jaws and slotted vertical side portions engaging and connecting said bearing members and said I beams, removable means posisaid jaw members may be withdrawn from the set concrete, and mold panels supported 'by said bearing-members. 7 -3. Centeringapparatus for use inconnection with I beams or like members,co nsisting of a plurality of bearingmembers ex-v tending transversely under said I beams, a

7 plurality of panel carriers positioned trans:

positionedoutside the rear faces of jaw versely upon said bearing members, holding means having slotted vertical side portions.

engaging said bearing members and saidI beams, removable means positioned in said.

bearing'members and adapted to extend laterally through said slotted portions of saidv holding means, means to detachably, lock said holding means in position,-and panel members mounted upon said panel carriers;

' 4:. Centering apparatus for use in connection with I'beam's orlike members, consisting of a plurality of bearing members,

removable holding means engaging said.

bearing members and said-Ibeams, means to detachably lock sa1d bearing members and said holding means, in position, panel mem-.

bers positioned'by said bearing members in operative relation to said I beams, and means members oi": said holding meansto mold a cavity into which said jaw members maybe withdrawn from the set concrete.

15 Centering apparatusfor use in connec-- tionwith I beams or like members, consisting off-a plurality. of bearing members extending transversely under said I beams, re

movable holding means engaging said bear- .ing. members and saidI beams, panel mem- -j acent the bottom flanges of saidI beams and bers positioned bysaid bearing members in operative vrelation to fsald I beams, means to detachably lock said bearing members and said holding'meansin position,-means positloned outsldethe' rear faces oftaw; mem

bers of said holding means to mold a; cayity into which said jaw members maybe-with-" drawn from the'set concrete, and removable spacmg members posltloned under andadintermediate. holding means positioned in oppositely disposed relation to each other;

6. Centering apparatus for use in connec- ,tion with I beams orlike members, consisting of a plurality of bearing members extending transversely under said I beams, a

1 plurality of panel carriers disposed upon and transversely to saidbearing members,

removable means engaging and connecting said bearing members and said I beams, re- 'movable. means engaging said bearing members and said panelcarriers'permitting a slidable adjustment of the panel carriers along the upper face of the bearing mem bers, and panel members mounted upon said panelcarriers;

. 1 :7, Centerlngapparatus for use-inconnem babies of this patent may be obtained fonfive cents each, by addressing r Washington,D.C. V

with removableholding means engaging.

tion with I beams or like members, provided.

said I beams and having slotted vertical side portions, and bearing members engag ing said holding means and provided with removable means adapted to extend laterally through said slotted. portions whereby said bearing members are adapted to have a vertical slidable reciprocal movement relative to said slotted'side portions 1 of said holding meansr 8. Centering apparatus 'for use in connection with I beams or like members, provided 9. Centering apparatus for use in connection with Ibeams orlike members, .provided with holding means having vertically disposed slotted'or like means-and] engaging said I beams, bearing. members" engaging said holding means and provided wauiaeral detachable means positioned in .said

cavity into which saidjaw members may be withdrawn fromthe set concrete. 1

bearing-members adapted ito extend laterally outward from. said bearingmembers and engage'saidfholding means in a man ner whereby said bearing members are adapted to'have a vertical slidablereciprdcal movement relativeto said holding means,

and wedges todetachablyposition bearing members.

:10. I Ce te'rlng apparatus for use I in con Motion with I beams :or like members, con

sisting of a plurality of bearing members, holding. means means positionedin said bearing members and adapted to extend outwardly- -from vsaid;

bearingmembers' and engage said holding ns n aid bearin bers and Said I beams, lateral detachable means in laimanner whereby said bearing members are adapted tohave: a vertical slidable movement relative to said holding means, means to detachably lock said bear};

ing members in position, and panel members together with co-acting means supported by saidbearing members. v q i In testimony whereof, I have signed my.

name in the presence of two witnesses.

:f o aRLES -1 E ER? i l Witnessesg I GEORGE 've Dnnw I *J.-O.-HECLIN"' the Commissioner of latentgh I 

